<?php

/*

WARNING: THIS MODULE IS EXTREMELY DANGEROUS AS IT ENABLES INLINE SCRIPTING
INSIDE HTML PURIFIER DOCUMENTS. USE ONLY WITH TRUSTED USER INPUT!!!

*/

/**
 * Implements required attribute stipulation for <script>
 */
class HTMLPurifier_AttrTransform_ScriptRequired extends HTMLPurifier_AttrTransform
{
	function transform($attr, $config, &$context) {
		if (!isset($attr['type'])) {
			$attr['type'] = 'text/javascript';
		}
		return $attr;
	}
}

/**
 * XHTML 1.1 Scripting module, defines elements that are used to contain
 * information pertaining to executable scripts or the lack of support
 * for executable scripts.
 * @note This module does not contain inline scripting elements
 */
class HTMLPurifier_HTMLModule_Scripting extends HTMLPurifier_HTMLModule
{
	var $name = 'Scripting';
	var $elements = array('script', 'noscript');
	var $content_sets = array('Block' => 'script | noscript', 'Inline' => 'script | noscript');
	
	function setup($config) {
		// TODO: create custom child-definition for noscript that
		// auto-wraps stray #PCDATA in a similar manner to 
		// blockquote's custom definition (we would use it but
		// blockquote's contents are optional while noscript's contents
		// are required)
		
		// TODO: convert this to new syntax, main problem is getting
		// both content sets working
		foreach ($this->elements as $element) {
			$this->info[$element] = new HTMLPurifier_ElementDef();
			$this->info[$element]->safe = false;
		}
		$this->info['noscript']->attr = array( 0 => array('Common') );
		$this->info['noscript']->content_model = 'Heading | List | Block';
		$this->info['noscript']->content_model_type = 'required';
		$this->info['script']->attr = array(
			'defer' => new HTMLPurifier_AttrDef_Enum(array('defer')),
			'src'   => new HTMLPurifier_AttrDef_URI(true),
			'type'  => new HTMLPurifier_AttrDef_Enum(array('text/javascript'))
		);
		$this->info['script']->content_model = '#PCDATA';
		$this->info['script']->content_model_type = 'optional';
		$this->info['script']->attr_transform_pre['type'] =
		$this->info['script']->attr_transform_post['type'] =
			new HTMLPurifier_AttrTransform_ScriptRequired();
	}
}

